Method for altering starch using a microbial branching enzyme

摘要

The invention relates to the field of the production and application of starch. Provided is a method for producing altered starch, comprising treating amylose-containing starch with a branching enzyme (EC 2.4.1.18) of microbial origin, said branching enzyme having a substantially higher activity on amylose than on amylopectin. Also provided is the use of the branching enzyme having a preference for amylose over amylopectin, to alter least one property of amylose-containing starch, including reducing the retrogradation, a reducing the viscosity and/or reducing the glycemic index of the starch